800 memory upgrade

[800 memory upgrade]

I have read several comments about 256k and 288k memory upgrades for the atari 800. I would very much like to build one but I haven't been able to find any diagrams or pictures. Can anyone help me out here.

[David Byrd 256K A800 memory upgrade]

http://atrey.karlin.mff.cuni.cz/~pavel/atari/800_256K.html

 

I got my hands on one of these with detailed schematics, pcb layout, diagrams etc.

 

I can scan into a PDF if anyone is interested.

 

I am interested [email protected]

[David Byrd 256K A800 memory upgrade]

http://atrey.karlin.mff.cuni.cz/~pavel/atari/800_256K.html

 

I got my hands on one of these with detailed schematics, pcb layout, diagrams etc.

 

I can scan into a PDF if anyone is interested.

 

I would be interested in all of the details [email protected]